MgB2/Fe superconducting tapes made using mechanically milled powders in Ar and H2 atmospheres

T. Kondo, P. Badica, Y. Nakamori, S. Orimo, K. Togano, G. Nishijima, K. Watanabe

Research output: Contribution to journalConference articlepeer-review

12 Citations (Scopus)

Abstract

Fe-sheathed tapes of MgB2 with addition of SiC have been prepared by the powder-in-tube (PIT) method using a powder mixture mechanically milled in an argon or hydrogen atmosphere. The reactivity of the component powders in the mixtures, Mg, B and SiC, was significantly enhanced by mechanical milling, so that MgB2 formed faster than in tapes fabricated from a hand-milled mixture. At the same time the number of impurity phases was higher, and the impurity phases of Mg2Si and Fe2B were observed only in these tapes. Mechanical milling also induced a lower quality of MgB 2, especially for tapes produced from powders milled in a hydrogen atmosphere, with a significant influence on the values of the critical temperature TC and critical field, JC.

Original languageEnglish
Pages (from-to)1231-1237
Number of pages7
JournalPhysica C: Superconductivity and its applications
Volume426-431
Issue numberII
DOIs
Publication statusPublished - 2005
EventProceedings of the 17th Internatioanl Symposium on Superconductivity (ISS 2004) Advances in Superconductivity -
Duration: 2004 Nov 232004 Nov 25

Keywords

  • J
  • Mechanical milling
  • MgB-tapes
  • Microstructure
  • Reactivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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